As far as I know: Getters/setters related: apply update identifier_= Pattern matching: unapply unapplySeq For-comprehensions: map flatMap filter withFilter foreach Prefixed operators: unary_+ unary_- unary_! unary_~ Beyond that, any implicit from A to B. Scala will also convert A <op>= B into A = A <op> B, if the former operator isn’t defined, “op” is … Read more
In Liquid you comment out using the {% comment %} and {% endcomment %} tags: {% comment %} This is a comment in Liquid {% endcomment %} It doesn’t matter if the comment is inline or a block comment. {% comment %} This is a block comment in Liquid {% endcomment %}
They’re not optional. Semicolons modify the behaviour of an expression statement so it should be a conscious decision whether you use them or not for a line of code. Almost everything in Rust is an expression. An expression is something that returns a value. If you put a semicolon you are suppressing the result of … Read more
Syntax is the grammar. It describes the way to construct a correct sentence. For example, this water is triangular is syntactically correct. Semantics relates to the meaning. this water is triangular does not mean anything, though the grammar is ok. Talking about the semantic web has become trendy recently. The idea is to enhance the … Read more
Use progn: (if condition (progn (do-something) (do-another-thing))) See sequencing in the manual.
From Common Lisp: Equality Predicates (eq x y) is true if and only if x and y are the same identical object. The eql predicate is true if its arguments are eq, or if they are numbers of the same type with the same value, or if they are character objects that represent the same … Read more
In the context of computer science, a word is the concatenation of symbols. The used symbols are called the alphabet. For example, some words formed out of the alphabet {0,1,2,3,4,5,6,7,8,9} would be 1, 2, 12, 543, 1000, and 002. A language is then a subset of all possible words. For example, we might want to … Read more
It is not supported by Gherkin, so you have to prefix all lines with #. If you use the SpecFlow Visual Studio extension (v1.9.2) you can simply select the lines and toggle them into comments and back. The default shortcuts are Ctrl+K,C to comment and Ctrl+K,U to uncomment. You can also “workaround” this problem in … Read more
You could try the following wiki syntax, it works for me on 1.17 # one #:<pre> #::some stuff #::some more stuff</pre> # two It is not perfect, because you end up with a more indent but it does allow one to use the wiki syntax for correctly formatted pre blocks over multiple lines. As previously … Read more
TL;DR: It’s a syntax for specifying the type of a trait object and must be specified for clarity reasons. Since Rust 1.0, traits have led a double life. Once a trait has been declared, it can be used either as a trait or as a type: // As a trait impl MyTrait for SomeType {} … Read more